Judd Legum @JuddLegum
2. In a competitive economy, profit margins should approach zero (as long as there are reasonable substitutes) In the US, corporate profits as a share of the American economy have risen dramatically over the last two decades, from 5% of GDP to nearly 12% https://t.co/md7itT4Z8C https://t.co/RFbzJVhegQ — PolitiTweet.org